Finding the Fourth Proportional to 2,793.78, 3,855.54 and 1,551.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,793.78 : 3,855.54 = 1,551.78 : x
2. Step 2: Convert to fraction form
   2,793.78/3,855.54 = 1,551.78/x
3. Step 3: Cross multiply
   2,793.78x = 3,855.54 × 1,551.78
4. Step 4: Simplify right side
   2,793.78x = 5,982,949.86
5. Step 5: Solve for x
   x = 5,982,949.86/2,793.78
6. Step 6: Final answer
   x = 2,141.53